| // Protocol Buffers - Google's data interchange format |
| // Copyright 2008 Google Inc. All rights reserved. |
| // https://developers.google.com/protocol-buffers/ |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // Author: kenton@google.com (Kenton Varda) |
| // emulates google3/file/base/file.cc |
| |
| #include <google/protobuf/testing/file.h> |
| #include <stdio.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #ifdef _MSC_VER |
| #define WIN32_LEAN_AND_MEAN // yeah, right |
| #include <windows.h> // Find*File(). :( |
| #include <io.h> |
| #include <direct.h> |
| #else |
| #include <dirent.h> |
| #include <unistd.h> |
| #endif |
| #include <errno.h> |
| |
| namespace google { |
| namespace protobuf { |
| |
| #ifdef _WIN32 |
| #define mkdir(name, mode) mkdir(name) |
| // Windows doesn't have symbolic links. |
| #define lstat stat |
| #ifndef F_OK |
| #define F_OK 00 // not defined by MSVC for whatever reason |
| #endif |
| #endif |
| |
| bool File::Exists(const string& name) { |
| return access(name.c_str(), F_OK) == 0; |
| } |
| |
| bool File::ReadFileToString(const string& name, string* output) { |
| char buffer[1024]; |
| FILE* file = fopen(name.c_str(), "rb"); |
| if (file == NULL) return false; |
| |
| while (true) { |
| size_t n = fread(buffer, 1, sizeof(buffer), file); |
| if (n <= 0) break; |
| output->append(buffer, n); |
| } |
| |
| int error = ferror(file); |
| if (fclose(file) != 0) return false; |
| return error == 0; |
| } |
| |
| void File::ReadFileToStringOrDie(const string& name, string* output) { |
| GOOGLE_CHECK(ReadFileToString(name, output)) << "Could not read: " << name; |
| } |
| |
| bool File::WriteStringToFile(const string& contents, const string& name) { |
| FILE* file = fopen(name.c_str(), "wb"); |
| if (file == NULL) { |
| GOOGLE_LOG(ERROR) << "fopen(" << name << ", \"wb\"): " << strerror(errno); |
| return false; |
| } |
| |
| if (fwrite(contents.data(), 1, contents.size(), file) != contents.size()) { |
| GOOGLE_LOG(ERROR) << "fwrite(" << name << "): " << strerror(errno); |
| return false; |
| } |
| |
| if (fclose(file) != 0) { |
| return false; |
| } |
| return true; |
| } |
| |
| void File::WriteStringToFileOrDie(const string& contents, const string& name) { |
| FILE* file = fopen(name.c_str(), "wb"); |
| GOOGLE_CHECK(file != NULL) |
| << "fopen(" << name << ", \"wb\"): " << strerror(errno); |
| GOOGLE_CHECK_EQ(fwrite(contents.data(), 1, contents.size(), file), |
| contents.size()) |
| << "fwrite(" << name << "): " << strerror(errno); |
| GOOGLE_CHECK(fclose(file) == 0) |
| << "fclose(" << name << "): " << strerror(errno); |
| } |
| |
| bool File::CreateDir(const string& name, int mode) { |
| return mkdir(name.c_str(), mode) == 0; |
| } |
| |
| bool File::RecursivelyCreateDir(const string& path, int mode) { |
| if (CreateDir(path, mode)) return true; |
| |
| if (Exists(path)) return false; |
| |
| // Try creating the parent. |
| string::size_type slashpos = path.find_last_of('/'); |
| if (slashpos == string::npos) { |
| // No parent given. |
| return false; |
| } |
| |
| return RecursivelyCreateDir(path.substr(0, slashpos), mode) && |
| CreateDir(path, mode); |
| } |
| |
| void File::DeleteRecursively(const string& name, |
| void* dummy1, void* dummy2) { |
| if (name.empty()) return; |
| |
| // We don't care too much about error checking here since this is only used |
| // in tests to delete temporary directories that are under /tmp anyway. |
| |
| #ifdef _MSC_VER |
| // This interface is so weird. |
| WIN32_FIND_DATA find_data; |
| HANDLE find_handle = FindFirstFile((name + "/*").c_str(), &find_data); |
| if (find_handle == INVALID_HANDLE_VALUE) { |
| // Just delete it, whatever it is. |
| DeleteFile(name.c_str()); |
| RemoveDirectory(name.c_str()); |
| return; |
| } |
| |
| do { |
| string entry_name = find_data.cFileName; |
| if (entry_name != "." && entry_name != "..") { |
| string path = name + "/" + entry_name; |
| if (find_data.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) { |
| DeleteRecursively(path, NULL, NULL); |
| RemoveDirectory(path.c_str()); |
| } else { |
| DeleteFile(path.c_str()); |
| } |
| } |
| } while(FindNextFile(find_handle, &find_data)); |
| FindClose(find_handle); |
| |
| RemoveDirectory(name.c_str()); |
| #else |
| // Use opendir()! Yay! |
| // lstat = Don't follow symbolic links. |
| struct stat stats; |
| if (lstat(name.c_str(), &stats) != 0) return; |
| |
| if (S_ISDIR(stats.st_mode)) { |
| DIR* dir = opendir(name.c_str()); |
| if (dir != NULL) { |
| while (true) { |
| struct dirent* entry = readdir(dir); |
| if (entry == NULL) break; |
| string entry_name = entry->d_name; |
| if (entry_name != "." && entry_name != "..") { |
| DeleteRecursively(name + "/" + entry_name, NULL, NULL); |
| } |
| } |
| } |
| |
| closedir(dir); |
| rmdir(name.c_str()); |
| |
| } else if (S_ISREG(stats.st_mode)) { |
| remove(name.c_str()); |
| } |
| #endif |
| } |
| |
| bool File::ChangeWorkingDirectory(const string& new_working_directory) { |
| return chdir(new_working_directory.c_str()) == 0; |
| } |
| |
| } // namespace protobuf |
| } // namespace google |